For the thrill of a lifetime, try zip-lining 1500 feet at speeds of 40mph with the wind blowing your hair and incredible views of the Sierra Nevada Foothills. After that, take a tour deep into the earth’s crust to see spectacular gems. At Moaning Cavern and Twin Zip Lines you can do that. Just 2-3 hours from the Bay Area and about an hour from Sacramento, it is very easy to get to Moaning Cavern and Twin Zip Lines. They are located at the same address. The address is 5350 [...]